I've been approached a few times by people who are "Hare Krishna" and have asked me to say a certain phrase...

Not sure what it means. They hand out stickers, ask people to buy lei's out on the beaches (here in Hawaii), etc. I'm not into the faith at all, but noticed they always ask me to repeat a certain phrase...I've said a couple times to get them out of my face...but what am I actually saying? Hope it's no allegiance to Hare Krishna or whoever it is. It's always the same phrase though...??